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WB JEE Medical WB JEE Medical Solved Paper-2013

  • question_answer
    A piece of iron is heated in a flame. If first becomes dull red then becomes reddish yellow and finally turns to white hot. The correct explanation for the above observation is possible by using

    A)  Stefans law

    B)  Wiens displacement law

    C)  Kirchoffs law

    D)  Newtons law of cooling

    Correct Answer: B

    Solution :

     The equation of Wiens displacement law, i.e., \[{{\lambda }_{m}}T=\text{constant}\text{.}\]


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